Article
Multidisciplinary Sciences
Hafiz Ghulam Muhu-Din Ahmed, Muhammad Rizwan, Muhammad Naeem, Muhammad Ahsan Khan, Faheem Shehzad Baloch, Sangmi Sun, Gyuhwa Chung
Summary: This study used DNA-based analysis to determine the genetic purity of 23 sunflower parents and their 60 hybrids. The researchers used SSR markers to analyze the polymorphism and identified the allele sizes of the parents and hybrids. The results showed that the hybrids had similar allele sizes to their parents, confirming the genetic purity. The findings of this study are important for accurate identification of hybrids and improving seed genetic purity testing globally.
Article
Plant Sciences
Cui Li, Linlin Wang, Jingtao Wu, F. Pax C. Blamey, Nina Wang, Yanlong Chen, Yin Ye, Lei Wang, David J. Paterson, Thea L. Read, Peng Wang, Enzo Lombi, Yuheng Wang, Peter M. Kopittke
Summary: This study investigated the translocation of foliar-applied zinc in sunflower leaves using synchrotron-based X-ray fluorescence microscopy (XFM) and transcriptome analysis. The results showed that the distribution of zinc changed over time, with initial accumulation in the epidermal layers and subsequent movement to the vascular tissues. Transcriptome analysis revealed genes involved in stress response, cell wall reinforcement, and binding. These findings are of significance for improving the efficiency of foliar zinc fertilizers.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Environmental Sciences
Muhammad Sajid Aqeel Ahmad, Alia Riffat, Mumtaz Hussain, Mansoor Hameed, Ambreen Khadija Alvi
Summary: This study investigated the effects of nickel application on physiological and biochemical attributes of sunflower cultivars grown in sand culture. Results showed that increasing nickel concentration significantly decreased vegetative parameters and photosynthetic attributes, while low levels of nickel improved growth attributes to some extent. The study also found that high nickel concentration had negative effects on leaf water potential, osmotic potentials, and relative water contents, but increased leaf turgor potential and membrane permeability. Hysun-33 exhibited higher tolerance to nickel stress compared to SF-187.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Plant Sciences
Md Shamimuzzaman, Guojia Ma, William Underwood, Lili Qi
Summary: In this study, we successfully cloned the R-11 gene conferring rust resistance in sunflower and found that the encoded protein shares structural and functional similarities with genes conferring plant resistance to biotrophic pathogens. Additionally, we identified differences in gene expression patterns associated with R-11-mediated resistance and uncovered the potential roles of terpenoid biosynthesis and metabolism in sunflower rust resistance.
Article
Biochemistry & Molecular Biology
Ettore Riccucci, Cosimo Vanni, Alberto Vangelisti, Marco Fambrini, Tommaso Giordani, Andrea Cavallini, Flavia Mascagni, Claudio Pugliesi
Summary: This study provides the first comprehensive characterization of the WOX family in sunflower, a member of the Asteraceae family. Through phylogenetic analysis, 18 putative HaWOX genes were identified and classified into three major clades. These genes show conserved structural and functional motifs and are evenly distributed on sunflower chromosomes. Gene expression analysis reveals a specific pattern of regulation during embryo growth and meristem differentiation, suggesting a pivotal role for the HaWOX family in sunflower development.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Gonzalo J. Arata, Mailen A. Riveira-Rubin, Diego Batlla, Maria Veronica Rodriguez
Summary: This study reveals considerable intraspecific variability for dormancy attributes among cultivated sunflowers, mainly manifested in differences in dormancy expression patterns and release rates among different genotypes.
Article
Environmental Sciences
Abdul Qadir, Sergii Skakun, Jaemin Eun, Meghavi Prashnani, Leonid Shumilo
Summary: The interaction between sunflower and microwave signal is still not fully understood. Our analysis reveals differences in the backscattering response of sunflower in the ascending and descending orbits for VV polarization and VH/VV polarization ratio due to the directional behavior of the flower head. We found that VH/VVdes is a preferable parameter for identifying sunflower phenological stages.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Agronomy
L. L. Qi, X. W. Cai
Summary: Sunflower downy mildew is a serious disease that significantly reduces sunflower yields worldwide. Understanding the spread and evolution of the pathogen population is crucial for developing resistant sunflower lines. In this study, the presence of the resistance gene Pl(36) in the sunflower line 803-1 was confirmed and its genetic mapping was conducted.
MOLECULAR BREEDING
(2022)
Article
Plant Sciences
Huiying Lu, Ziqi Wang, Chenyang Xu, Luhao Li, Chunwu Yang
Summary: Sunflower exhibits strong alkali tolerance. Alkali stress alters the lipid components of sunflower seeds, potentially affecting the quality of sunflower seed oils. Alkali stress promotes the accumulation of various substances in sunflower roots. Interaction of multiple phytohormones and bioactive molecules play a role in mediating alkali tolerance in sunflower.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Bartholomew Saanu Adeleke, Ayansina Segun Ayangbenro, Olubukola Oluranti Babalola
Summary: This study investigated the endophytic bacterial community structure of sunflower plants at the growing stage, revealing dominant bacterial species in the root and stem. The diversity of bacterial communities in plant organs across different sites was significantly different, with observed influences of soil physical and chemical parameters on bacterial distribution. The study provides insight into the potential use of these bacteria as bioinoculants for enhancing agricultural yields in the future.
PLANT SIGNALING & BEHAVIOR
(2021)
Article
Plant Sciences
Guillermo A. A. Dosio, Giselle M. A. Martinez-Noel, Leonela A. Garcia, M. Eugenia Giorgi, Jorge A. Tognetti
Summary: Sunflowers are considered non-fructan bearing plants, but research has shown that they can synthesize fructans under certain conditions. This finding has significant implications for breeding and management of sunflower crops.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Plant Sciences
Nabin K. Dangal, Hossein M. Rekabdarkolaee, Samuel G. Markell, Robert M. Harveson, Febina M. Mathew
Summary: Phomopsis stem canker significantly reduces sunflower yield and no management recommendations have been developed for U.S. farmers. A study conducted fungicide trials from 2009 to 2020 and found that quinone outside inhibitor (QoI) fungicides were moderately effective, while premixes of demethylation inhibitors (DMI), succinate dehydrogenase inhibitors (SDHI), and QoI were largely effective in controlling the disease. The study also suggested that the use of QoI fungicides is likely to be profitable in the presence of Phomopsis stem canker.
Article
Plant Sciences
Zahirul I. Talukder, William Underwood, Christopher G. Misar, Gerald J. Seiler, Xiwen Cai, Xuehui Li, Lili Qi
Summary: This study investigated the resistance against basal stalk rot (BSR) caused by Sclerotinia sclerotiorum in cultivated sunflower, introgressed from the wild sunflower Helianthus praecox ssp. runyonii. The research identified 19 BSR resistance quantitative trait loci (QTL) on nine sunflower chromosomes, with 16 of them deriving resistant alleles from H. praecox parent. These findings provide genetic markers for marker-assisted breeding to combat BSR in sunflower.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Ashley C. C. Barstow, Jarrad R. R. Prasifka, Ziv Attia, Nolan C. C. Kane, Brent S. S. Hulke
Summary: This study identified major loci associated with nectar volume variation in sunflower using genetic mapping. Increased nectar volume was found to be associated with increased sugars and total energy per floret. Candidate genes on chromosomes were found to be homologous to genes with nectary function in Arabidopsis.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Garrett M. Janzen, Emily L. Dittmar, Nicolas B. Langlade, Nicolas Blanchet, Lisa A. Donovan, Andries A. Temme, John M. Burke
Summary: Cultivated sunflower exhibits different responses to drought at different developmental stages, while leaf transcriptomic responses are similar. Sunflowers stressed early show increased water acquisition during recovery, resulting in higher growth rates, whereas late-stressed sunflowers are more water use-efficient.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Chathurani Ranathunge, Gregory L. Wheeler, Melody E. Chimahusky, Meaghan M. Kennedy, Jesse I. Morrison, Brian S. Baldwin, Andy D. Perkins, Mark E. Welch
Article
Multidisciplinary Sciences
Chathurani Ranathunge, Sreepriya Pramod, Sebastien Renaut, Gregory L. Wheeler, Andy D. Perkins, Loren H. Rieseberg, Mark E. Welch
Summary: The study found that microsatellites in non-coding regions of genes are more likely to contribute to gene expression differences among species, and are significantly enriched in terms related to transcriptional regulation and transcription factor activity.
Article
Biochemistry & Molecular Biology
Chathurani Ranathunge, Melody E. Chimahusky, Mark E. Welch
Summary: Previously considered non-functional, microsatellites are now found to play a role in driving rapid adaptive evolution. This study shows that allele length variation at expressed microsatellites (eSTRs) in common sunflowers is under selection, with significant correlations to latitude. The findings suggest that eSTRs may facilitate local adaptation across different climates.
MOLECULAR GENETICS AND GENOMICS
(2022)